He is not the God of the dead, but the God of the living: you therefore do greatly err.
All Commentaries on Mark 12:27 Go To Mark 12
Jerome
AD 420
But in a mystical sense: what can this woman, leaving no seed to seven brothers, and last of all dying, mean except the Jewish synagogue, deserted by the seven-fold Spirit, which filled those seven patriarchs, who did not leave to her the seed of Abraham, that is, Jesus Christ? For although a Son was born to them, nevertheless He was given to us Gentiles. This woman was dead to Christ, nor shall she be joined in the resurrection to any patriarch of the seven; for bythe number seven is meant the whole company of the faithful. Thus it is said contrariwise by Isaiah, “Seven women shall take hold of one man;” that is, the seven Churches, which the Lord loves, reproves, and chastises, adore Him with one faith. Wherefore it goes on: “And Jesus answering, said unto them, Do ye not therefore err, not knowing the Scripture, neither the power of God?”.
Thus then they do not understand the Scripture, in that in the resurrection, men shall be as the Angels of God, that is, no man there dies, no one is born, no infant is there, no old men.
But I say, “in the bush, "which is an image of you; for in it the fire was kindled, but it did not consume its thorns; so my words set you on fire, but do not burn off your thorns, which have grown under the curse.